This stuff is tricky and honestly doing flat rates for tracks is a good way it seems to screw yourself. I'm currently working on 2 projects simultaneously so differences are really obvious to me right now. At this point I'm thinking charge tracking tracking by the hour and mixing at a flat rate is the way to go. Tracking speed is dependent on them, mixing speed is dependent on you for the most part.
Some of you and your charging though... wow. Although I suspect some of you probably have no $$$ nice gear and use a lot of amp sims and stuff. Which there is nothing wrong with that but when one channel of my tracking is running through $5k+ of gear there is no way in hell I'm tracking someone for these prices some of you are talking about.
If you truly read the thread, most of the dudes with the lower prices are a.) still learning, b.) have other jobs to pay the bills and do the AE thing on the side.
In the end it doesn't matter what kind of signal chain it runs through, sims and programmed drums or a 5K setup, etc. If the end result of the guy with no money in his setup sounds better than the guy with the 5K signal chain, what does that really say about the guy with the 5K signal chain
I don't mean that as a slam, either, I know plenty of laptop dudes who turn out a product that people rave about.
And, really, any band worth their salt will go to the person who they think will give them the best recording at the best price. It is what it is.
I don't do a lot of projects these days unfortunately, lol. Even at dirt cheap prices, bands in the style I work in dont have any money, so they do everything themselves with sims and programmed drums, have a friend, or dont record.
I don't setup tracking anymore, I take the bands that want to track to a real studio and they pay the day rate for the studio (~240-350) and myself. Then a flat per song rate to mix and master.